John Huh

LS1 main caps are identified by location and direction. Learn what the numbers mean, which way the main-cap arrows point, and how the caps are positioned before seating them in the block.

Before installing the cylinder heads, check the LS1 block deck for warpage. Our LS engine reference specifies maximum flatness of 0.004 inch within 6 inches and 0.008 inch across the deck.

This Moroso performance parts FAQ explains how oil accumulators, racing filters, catch cans, vacuum pumps, coolant expansion tanks, transmission pans, battery hardware, and engine-building tools work—and what to consider before adding them to your street, track, or race build.

Factory LS1 wrist pins use a press-fit connecting-rod arrangement, while many aftermarket combinations use full-floating pins and retaining locks. Learn how each design works and which measurements matter.

Tatiana Calderón made NASCAR Brazil history at Curvelo, avoiding a restart crash before defending the lead for more than 20 minutes.

Hyundai is recalling 5,360 Ioniq 9 electric SUVs because powered rear seats may fail to stop after contacting a person. Here are the affected trims, owner precautions and software remedy.

California’s SB 1069 lets experienced manufacturers seek conditional approval for tested aftermarket parts while CARB finishes its EO review. It does not legalize every modification.

Volkswagen is recalling 208,724 U.S. vehicles after a steering-rack mounting bolt was found capable of corroding and breaking. Here are the reported models and how to check your VIN.

An LS1 crankshaft can look usable while hiding structural damage. Learn how magnetic-particle inspection helps reveal crankshaft cracks and why a cracked LS crank should be replaced.

LS1 crankshaft runout is checked at the No. 3 center main journal with a dial indicator. Learn how to measure crankshaft straightness, identify excessive runout, and determine whether an LS crank may be bent before assembling the short block.